SECTION 1. SHORT ANSWER Answer the following questions in the space provided. 1. Match the symbol on the left with its appropriate description on the right. A (a) A precipitate forms. I (b) A gas forms. T (c) A reversible reaction occurs. 1 (d) Heat is applied to the reactants. (aq) (c) A chemical is dissolved in water. (f) A chemical is in the liquid state. 2.) Finish balancing the following equation: 3Fe_(3)O_(4)+underline ( )Alarrow underline ( )Al_(2)O_(3)+underline ( )Fe 3. In each of the following formulas, write the total number of atoms present. __ a. 4SO_(2) __ b. 8O_(2) __ c. 3Al_(2)(SO_(4))_(3) __ d. 6times 10^23HNO_(3) 4. Convert the following word equation into a balanced chemical equation: convert mherelowing work cypation solution comporite lengtrile alominum, metal + copper(II) fluoride 5. One way to test the salinity of a water sample is to add a few drops of silver nitrate solution with a known concentration. As the solutions of sodium chloride and silver nitrate mix a precipitate of silver chloride forms, and sodium nitrate is left in solution. Translate these sentences into a balanced chemical equation. 6. a. Balance the following equation: NaHCO_(3)(s)xrightarrow (Delta )Na_(2)CO_(3)(s)+H_(2)O(g)+CO_(2)(g) __ CHEMISTRY CHEMICAL EQUATIONS AND REACTIONS

Question

Problemas

SECTION 1. SHORT ANSWER Answer the following questions in the space provided. 1. Match the symbol on the left with its appropriate description on the right. A (a) A precipitate forms. I (b) A gas forms. T (c) A reversible reaction occurs. 1 (d) Heat is applied to the reactants. (aq) (c) A chemical is dissolved in water. (f) A chemical is in the liquid state. 2.) Finish balancing the following equation: 3Fe_(3)O_(4)+underline ( )Alarrow underline ( )Al_(2)O_(3)+underline ( )Fe 3. In each of the following formulas, write the total number of atoms present. __ a. 4SO_(2) __ b. 8O_(2) __ c. 3Al_(2)(SO_(4))_(3) __ d. 6times 10^23HNO_(3) 4. Convert the following word equation into a balanced chemical equation: convert mherelowing work cypation solution comporite lengtrile alominum, metal + copper(II) fluoride 5. One way to test the salinity of a water sample is to add a few drops of silver nitrate solution with a known concentration. As the solutions of sodium chloride and silver nitrate mix a precipitate of silver chloride forms, and sodium nitrate is left in solution. Translate these sentences into a balanced chemical equation. 6. a. Balance the following equation: NaHCO_(3)(s)xrightarrow (Delta )Na_(2)CO_(3)(s)+H_(2)O(g)+CO_(2)(g) __ CHEMISTRY CHEMICAL EQUATIONS AND REACTIONS

Answer 1

1. Match the symbol on the left with its appropriate description on the right. __ A (a) A precipitate forms. __ I (b) A gas forms. __ T (c) A reversible reaction occurs. __ 1 (d) Heat is applied to the reactants. __ (aq) (e) A chemical is dissolved in water. __ (l) (f) A chemical is in the liquid state. 2. Finish balancing the following equation: $3Fe_{3}O_{4}+8Al\rightarrow 9Al_{2}O_{3}+9Fe$ 3. In each of the following formulas, write the total number of atoms present. __ a. $4SO_{2}$ - 12 atoms (4 sulfur atoms and 8 oxygen atoms) __ b. $8O_{2}$ - 16 atoms (16 oxygen atoms) __ c. $3Al_{2}(SO_{4})_{3}$ - 51 atoms (6 aluminum atoms, 9 sulfur atoms, and 36 oxygen atoms) __ d. $6\times 10^{23}HNO_{3}$ - $6\times 10^{23}$ atoms (each molecule has 1 hydrogen atom, 1 nitrogen atom, and 3 oxygen atoms) 4. Convert the following word equation into a balanced chemical equation: $2Al + 3CuF_{2} \rightarrow 2AlF_{3} + 3Cu$ 5. Translate the sentences into a balanced chemical equation: $NaCl + AgNO_{3} \rightarrow NaNO_{3} + AgCl$ 6. a. Balance the following equation: $2NaHCO_{3}(s) \xrightarrow {\Delta }Na_{2}CO_{3}(s) + H_{2}O(g) + CO_{2}(g)$

Problemas

Solución

Responder